Thanks!
Also the "details" slider in Lightroom should be set to 0. I think it's at 25 by default. That slider is causing those annoying wormy artifacts...
I know this is an old topic. But i wanted to tell you guys how to avoid wormy artifacts in Lightroom.
Under sharpening leave the "detail" slider at 0. Thats it. No wormy artifacts. No need to change your whole workflow...
You better buy one. As it is better to use shutter speeds of 1/50 at 25fps, 1/100 at 50fps, 1/120 at 60fps and so on... So your video won't look laggy.